Cylinder-tooth wrench for threshing-machines.



l Patented fan. 29, 49m.

G. THonsEN. CYLINDER TOOTH WRENCH FR THRESHINGIMACHINES.

(Application led May 11, 1.900.)

(no Mogel.)

UNITED STATES PATENT OFFICE@ GILBERT yTHORSEN, OF LETCHER, SOUTH DAKOTA.

CYLINDER-TOOTH WRENCH OR'THRESHING-MACHINES.

SPECIFICATION forming part of Letters Patent N o. 667,044, dated January 29, 1901. y

Application illed May 11, 1900.

To @ZZ whom, it may concern: Beit known that LGILBERT THonsEN, a citizen of the United States, residing at Letelier, in the county of Sanborn and State of South Dakota, have invented a new and useful Cylin der-Tooth Wrench for Threshing-Machines, of which the following is a speciication.

The invention relates to improvements in cylinder-tooth wrenches for threshing-ma chines.

One object of the present invention is to improve the construction of wrenches for operating on the cylinder-teeth of threshing lmachines and to provide a simple and comn paratively inexpensive one adapted to be readily clamped to the cylinder-har and ca pablo of operating on the teeth thereof with out obstructing the view of the operator.

end of the arm l ing positioned A further object of the invention is to provide a Wrench of this kind adapted, after beon the cylinder-bar, to be readily operated with one hand, so that the tooth may be tapped by a hammer in the other hand of the operator, whereby a tooth may be firmlyset in a minimum amount of time.

"lhe invention consists in the construction ahd novel combination and arrangement ofV parts hereinafter f nlly described, illustrated in the accompanying drawings, and pointed out in the claims hereto appended.

In the drawings, Figure l is a perspective View of a Wrench constructed in accordance with this invention. Fig. 2 isalongitudinal sectional View of the same. Fig. 3 is a transverse sectional View or one end of the wrench. Fig. 4 is a similar view of the other end of the wrench.

Like numerals of reference designate corresponding parts in all the figures of the drawings.

l designates a frame or stock provided with a tubular portion 2 and having a hollow arm 3 extending from one end thereof and adapted to receive spu r-gearing for communicating motion from a longitudinal shaft 4 to a rotary wrench-head 5, arranged parallel with the shaft 4 and extending inward from the outer l 3, which is arranged at right angles to the tubular portion 2. The ends of the 3 are bifurcated and receive spur gear-wheels 6 and 7, which are fixed to reduced portions 8 and 9 of 'the longitudinal Serial N u..'16,347. (No model.)

shaft 4 and the wrench-head 5 and which mesh with an in termediate gear-wheel or pin ion 10, mounted on a suitable shaft ll and arranged at the center of the arm to change the direction of the rotation of the Wrench head, so that the latter will rotate in the same direction as the shaft 4. The reduced portion 9 of the wrench-head consists of astem, 6p and the gear-wheels of the shaft 4 and the- Wrench-head may be keyed or otherwise secured to such parts. The other end of the longitudinal shaft 4 receives a ratchet-wheel l2, which is adapted to be engaged byeither of a pair of spring-pressed pawls or dogs 16l and 17, pivoted between their ends inthe bifurcated inner end'lS of an operatinghandle 19 and having a spring 20 interposed between their inner ends and adapted to throw their 7o outer. engaging ends into engagement with the ratchet-wheel when the pawls or dogs are free to move in such direction. The pawls or dogs are adapted to permit the shaft to be rotated continuously in either direction by the oscillation of the handle, and they are controlled by an adjustable ring 2l, havingar projecting portion or flange 22, adapted to be engaged with the inner end of either of the pawls or dogs to swing the outer end of such 8o pavrl or dog out of engagement with the ratchet-wheel. The bifurcated end of the operatingfarm is perforated for the reception of the adjacent end 23 of the shaft 4, which is reduced, as shown, and which has a knob or head 25 sacured to it and arranged at the outer face of the said bifurcated end of the operating-arm.A

The operating-arm is composed ot' inner and outer sections 26 and 27. The outer or han- '9o dle portion of the arm hasits inner end 28 grooved and bifnrcated to receive an arm or extension 29 of the inner section, and the said arm or extension 29 is provided with a web 30, which is secured in the groove and bifurcation by a transverse pivot 3l, passing through both of lthe sections 26 and 27. The arm 29 is provided at its outer end with a shouldered notch 32, preferably formed in the web 3() and engaged bya beveled springloo actuated bolt 33, which is adapted to lock the outer section rigid with the inner section." he pivoted joint between the innerandouter sections of the operating-handle permits the ,body portion or stock and to be arranged at an angle t0 the inner portion should it be more convenient to oscillate'in such position.-

The tubular portion of the body or stock is provided with a longitudinal way 34, consisting of a fiat longitudinal portion projecting laterally lrom opposite sides of the tubular portion and forming flanges to receive a slide 35, which has corresponding side flanges, substantially L-shaped in cross-section,to engage the flanges of the ways or guide. The slide .is provided with an outwardly-extending ring 3G, and it has longitudinal arms 37 and 38, between which is journaled a toothed head 39of a lever 40. The head 39 of the levell 40 is provided with corrugations or grooves to form teeth 42, which are adapted to mesh with a rack 43, consisting of transverse teeth and located at one end' of the guide or way 34. When the lever 40 is oscillated, the teeth of its head 39 are caused to mesh with the teeth of the rack 43, and the slide is reciprocated to carry a rotary jaw or holder 44 toward and from the wrench-head. One of vthe arms of the slideis provided with ratchet-teeth 45,

which are engaged by a spring-,actuated dog or detent 46, mounted on the lever 40 and; adapted to be operated by a latch-lever 47. l The latch-lever 47 is pivoted in a bifurcation 5 48 of the handle of the lever 40, and it is connected with the dog or detent 4G by agg-od 49,

on which is disposed a spring 50,1whic tcrposed between the dog or detent 4 a id a suitable stop on the lever, whereby'the dg `or detent is held in engagement with the ra chet of the arnl 37.

is inrlhe ring 3G of the slide `forms a bearing for the jaw or holder 44, which is adapted to turn therein, and the said jaw or holder is provided with a slot 5l to receive the tooth to be operatedon. The tooth is placed in the slot or opening of the jaw or holder, and the Wrenchhead is arranged at the inner end of the too at the inner face of the cylinder-bar in po, ition to engage the nut. The lever 40 is then oscillated to engage the jaw or holder with the outer portion of the toothV and to bring the Wrench-head in proper position, and by this construction the device will be held on the cylinder-bar soV that it may be operated with one hand, thereby permitting the other hand of the operator to be employed for tapping the tooth with a hammer to cause it to be firmly seated. The toothed head of the lever 40 is adapted to be swung clear of the teeth of the rack to permit it to be brought to any point on the latter to adapt it to the cylinder and tooth to be operated on.

It will be seen that the wrench is simple and comparatively inexpensive Yin construction, 'that it is easily operated by one hand to screw a nut onor off a tooth, and that it is vadapted to retain itself in proper position.. YIt will also be apparent that the wrench is adapted to be operated with the vwork turned toward the operator, so that he may see the same during the operation of screwing a nut on or off'the threaded end `or shank of' a tooth. Furthermore, it will be apparent that the wrench-head is adapted to hold the nut, and that the latter will beprevented from dropping into a separator in removing it from a tooth.

What isclaimed is- 1. A device of the class described comprising a stock or body having a guide or way and provided with a rack, a wrench-head journaled -on the bodygearing for operating the Wrench-head, a slide mounted on the guide or way and having a jaw or holder located opposite the wrench-head, a lever mounted on the slide and having a toothed head engaging the rack and adapted to advance the'slide, and means for locking the'lever, substantially as described.

2. A device of t'he'class described comprising a stock or body, a rotary wrench-head, gearing for operating the wrench-heathen rack,

a slide mounted on the body and having a jaw or holder. located opposite the Wrenchhead, a lever mounted on the slide and havling a toothed portion adapted to mesh with the rack and tobe swung out of engagement with the same, and means for locking theylever, substantially as described.

3. A device of the class described comprising a stock or body having a guide and provided With a rack, a rotary wrench-head, gearing for operating the same, aslide mountj ed on the guide and having a jaw or holder arranged opposite the wrench-head, said slide being provided with arms and having a ratchet on one of the same, a lever mounted between the arms and having a toothed head arranged. to mesh with the rack, and a dog or detert carried bythe lever and engaging the ratchet, substantially as described.

4. A device of the class described comprising afstock, or body, a wrench-head mounted on the'stock or body, gearing vfor operating the wrench-head, aslide mounted on the stock or body and provided with a bearing extending outward and located opposite the Wrenchhead, a rotary jawor holder jonrnaled in the bearing, and means for operating and for locking the slide, substantially as described.

A device of the class described comprising a stock or body having a longitudinal tubular portion and provided at one end thereof with an arm, a shaft extending through the tubular portion, a wrench-head mounted on the arm, gearing located within the arm and connecting the wrench-head with the shaft at one end thereof, a ratchet-wheel mounted on the shaft at the other end of the same, an op- IIO IIS

erating-arm provided with pawls or dogs for and provided at one end thereof with an arm, a Shaft passing through the tubular portion, a wrench-head mounted on the arm, gearing connecting the Wrench-head with the shaft at one end of the latter,a ratchet-Wheel mounted the adjacent end of the shaft, a ratchet-meel mounted on the other end of the shaft, an arm oom posed ofA two sections pivoled together 'and provided with means for looking them rigid with each other, pawls mounted on the arm for engaging the ratchet-wheel, and a slide guided on the stock or body and located between the arm and the Wrench-head, and provided with a jaw or shoulder,substantial1y as described. l

In testimony that I claim the foregoing as my own I have hereto aiixed my signaturen 3o the presence of two Witnesses.

GILBERT THORSEN.

Witnesses:

J E. WHITING, JOHN J. CHRISTOPHER. 

